Kristin Cavallari and her husband, Chicago Bears quarterback Jay Cutler, welcomed their third child Monday, the proud mom announced on Instagram this afternoon.

"Saylor James Cutler was born today at 132pm!!" Cavallari wrote, revealing her baby girl's unique name.

The former reality star first shared the news of her pregnancy on her mobile app back in May, writing, "We're at it again! Thrilled to announce baby number 3 is on the way! The Cutler crew just keeps on growin'!"

Nearly two months later, she revealed that they were expecting a girl, posting a photo of the couple that featured a tiny pair of pink Converse sneakers.

Courtesy Kristen Cavallari app

"The boys are so excited to have a little sister on the way!!!" read the caption.